GB2077328A

GB2077328A - Fastening railway rails

Info

Publication number: GB2077328A
Application number: GB8009456A
Authority: GB
Original assignee: Pandrol Ltd
Current assignee: Pandrol Ltd
Priority date: 1980-03-20
Filing date: 1980-03-20
Publication date: 1981-12-16
Also published as: GB2077328B

Abstract

An assembly on a railway track comprises a metal base plate 1 fixed to a wooden sleeper and having welded thereto two metallic members 8 which each extend firstly (8B) upwards from the weld, then (8C) either sideways towards or away from a flange 3 of a rail 4 and then (8D) downwardly and sideways towards or away from the flange 3 to a tip (8E) spaced from the plate 1. A rail clip has a first portion 9 driven underneath and bearing upwardly upon the part 8C, a second portion 10 bearing downwardly on the flange 3 and a third portion 11 bearing downwardly upon the plate 1. Ribs 5 locate the edges of the flange 3. Such location can instead be performed by the portion 9 or by the part 8B. The metallic members 8 can be welded directly to a metal sleeper rather than to the plate 1. <IMAGE>

Description

SPECIFICATION Fastening railway rails According to one aspect of the invention, there is provided a metal base member, upon an area of which a flange-footed railway rail is to stand, and a metallic member, a region of which is welded to the base member, said metallic member extending firstly predominantly upwardly from said region, then sideways towards or away from said area and then downwardly and sideways towards or away from said area, to a tip which is neither in contact with nor welded to the base member.

The base member may be a base plate which is to lie on a wooden or concrete railway sleeper, or on some other suitable rail foundation, in which case there may be a rib extending across the plate, to locate one edge of the flange at the foot of the rail when the rail is standing on said area, and possibly another rib extending across the plate, to locate the other edge of the flange. Alternatively, the base member may be a steel railway sleeper.

In the case where the metallic member extends sideways towards said area and the base member is a base plate having a rib, the rib will be between said area and said region and said tip is preferably vertically above the rib. In all cases, preferably, no part of the metallic member is vertically above said area. The part that extends sideways and the part that extends both downwardly and sideways preferably are wholly curved. The metallic member is preferably formed by bending a piece, for example a rectangular piece, of sheet metal.

Preferably the metallic member is merely welded tithe upper face of the base member, although it is not impossible to have a projection or projections on it extending into and welded into a hole or holes in the base member.

Preferably, there is another metallic member as described above, at the opposite side of said area.

According to another aspect of the invention, there is provided an assembly on a railway track comprising a metal base member, a flange-footed railway rail standing on the base member, a metallic member a region of which is welded to the base member, the metallic member extending firstly predominantly upwardly from said region, then sideways towards or away from the rail flange, and then downwardly and sideways towards or away from said rail flange, to a tip which is neither in contact with nor welded to the base member, and a rail clip having a first portion driven underneath and bearing upwardly upon the sideways extending part of said metallic member, a second portion bearing downwardly on the top of the rail flange and a third portion bearing downwardly upon the base member at a location beyond said region, as seen from the rail flange.

Preferably, there is another metallic member and clip, as described above, at the opposite side of the rail flange and there may also be a rib or two ribs extending across the base member for locating one edge or both edges of the rail flange.

In the accompanying drawings, Figure 1 shows an end view of an assembly on a railway track, Figure 2 shows a plan view of part of the assembly, and Figures 3 to 5 show end views of three more assemblies on a railway track.

In Figure 1 there is shown a conventional metal base plate 1 having an inclined flat area 2 on which there stands the flange 3 of a flange-footed railway rail 4. On opposite sides of the area 2 are two ribs 5 on the base plate which extend across the entire width of the base plate.

Cut-spikes (not shown), for holding the rail down, pass through holes 6 through the base plate and other spikes (not shown) pass through holes 7 through the base plate and hold the base plate down on a wooden or concrete railway sleeper (not shown).

According to the invention, the conventional assembly thus far described is converted into an assembly according to the invention by extracting the cut-spikes (but not the other spikes) and, if desired without moving the rail, applying two metal members 8 each having a region 8A welded, all round its periphery, to the upper surface of the base plate at a location which, as seen from the area 2 and the flange 3, is beyond one of the ribs 5. From the region 8A, a part 8B extends only upwardly (although it could extend a little towards the rail too), then a part 8C extends sideways towards the area 2 and the flange 3 and then a part 8D, which leads to a tip 8E, extends downwardly and at the same time towards the area 2 and the flange 3.The'tip 8E is not in contact with or welded to the base plate; it is vertically above the rib 5, spaced from it by about - inch and not vertically above the area 2, where it would impede changing of the rail. The member 8 is made by bending a rectangle of sheet metal so that it forms a smoothly curved hook with an inside radius of 7/1 6 inch, to match the radius of metal rod stock of circular cross-section from which two rail clips have been made. Each has a first part 9 in the form of a straight leg driven underneath the part 8C and bearing upwardly upon it, the part 9 being parallel to the length of the rail, a second part 10 bearing downwardly on the top of the rail flange and a third part 11 bearing downwardly on the base plate at a location which is beyond the region 8A, as seen from the rail flange.Figure 1 shows on the left a clip according to Figures 4 to 7 of British Patent Specification No. 1,213,762, with the flat surface 1 0A on its "third portion" (using the nomenclature of Specification No. 1 213,762) pressing on the rail flange and on the right there is shown a clip according to Figures 1 to 5 of British Patent Specification No. 1 ,5 10,224 with the flat surface 1 OA of its "fifth portion" (using the nomenclature of Specification No. 1 ,5 1 0,224) bearing downwardly on the said flange.In practice, of course, the two clips would be similar to one another, except that one may differ from the other in the same way as-the clip according to Figures 4 to 6 of Specification No. 1,510,224 differs from the clip according to Figures 1 to 3 of that same specification. In that case the two clips will be driven in the same direction as one another, whereas the two clips shown in Figure 1 are driven in opposite directions.

If there is only one rib on the base plate, the substantially straight leg 9 of the clips can be used to locate the rail flange on the other side of the flange, as shown in Figure 3.

In Figures 3 to 5, parts corresponding to those of Figures 1 and 2 are correspondingly referenced.

The assemblies according to Figures 1 and 2 and Figure 3 may be modified by having the parts 8C and 8D extend sideways away from the area 2 and the flange 3. In that case the region 8A may be nearer the area 2 and the flange 3 than is the case in the assemblies shown in Figures 1 to 3.

Figure 4 shows a steel railway sleeper 13 having two metallic members 8 as described above welded at 8A to its upper surface. Its parts 8C and 8D extend towards the rail flange and the portions 9 of the clips are driven underneath them and locate the edges of the rail flange.

Figure 5 shows a further example of a steel railway sleeper 13 having two metallic members 8 welded at 8A to its upper surface. Its parts 8B locate the edges of the rail flange and the portions 9 of the clips are driven underneath its parts 8C and 8D, which extend away from the rail flange.

Claims

1. In combination, a metal base member, upon an area of which a flange-footed railway rail is to stand, and, at one or each of two opposite sides of said base member, a metallic member a region of which is welded to the base member, and which extends first predominantly upwardly from said region, then either sideways towards said area and thereafter downwardly and sideways towards said area, or sideways away from said area and thereafter downwardly and sideways away from said area, to a tip which is neither in contact with nor welded to the base member

2.An assembly on a railway track comprising a metal base member, a flange-footed railway rail standing on an area of the base member, and, at one or each of two opposite sides of said base member, a metallic member a region of which is welded to the base member and which- extends firstly predominantly upwardly from said region, then either sideways towards said area and thereafter downwardly and sideways towards said area, or sideways away from said area and thereafter downwardly and sideways away from said area, to a tip which is neither in contact with nor welded to the base member, and a rail clip having a first portion driven underneath and bearing upwardly upon the sideways extending part of said metallic member, a second portion bearing downwardly on the top of the rail flange and a third portion bearing downwardly upon the base member at a location beyond said region, as seen from the rail flange.

3. A combination or an assembly as claimed in claim 1 or 2, wherein no part of the or each metallic member is vertically above said area.

4. A combination or an assembly as claimed in any preceding claim, wherein, in respect of the or each metallic member, the part that extends sideways and the part that extends downwardly - and sideways are wholly arcuate.

5; A combination or an assembly as claimed in any preceding claim, wherein the or each metallic member has been formed by bending a piece of sheet metal.

6. A combination or an assembly as claimed in any preceding claim, wherein the or each metallic member is attached to the base member by only the weld therebetween.

7. A combination or an assembly as claimed in any preceding claim, wherein said base member is a base plate which is to lie or lies, on a rail foundation, for example a wooden or concrete railway sleeper.

8. A combination or an assembly as claimed in any one of claims 1 to 6, wherein said base member is a steel railway sleeper.

9. A combination or an assembly as claimed in any preceding claim, wherein projecting means projects upwardly from said base member and extends across said base member at one or both sides of said area to locate the corresponding edge(s) of the rail flange.

10. A combination or an assembly as claimed in claim 9, wherein, at said one or each of said two opposite sides of said base member, said projecting means is between said area and the corresponding said region and the corresponding said tip is directly above said projecting means.

11. A base member or an assembly as claimed in any one of claims 1 to 8, wherein, in the case where the or each metallic member partly extends sideways away from said area, the predominantly upwardly extending part thereof substantIally directly bounds said area.

12. An assembly as claimed in any one of claims 2 to 8, wherein, in the case where the or each metallic member partly extends sideways towards said area, the or each said first portion substantially directly bounds said area.

13. An assembly on a railway track, substantially as hereinbefore described with reference to Figures 1 and 2, or any one of Figures 3 to 5, of the accompanying drawings.